You misuse the terms knowledge and truth. There has been research done that shows homosexuals are not diseased or emotionally damaged, but I know that won't convince you. Belief and knowledge require actual research and evidence that form solid conclusions. Personal opinions don't denote truth. Personal sentiments don't prove anything. And most importantly, knowledge must include the possibility that you are wrong (also known as falsifiability). Unless you're open to that possibility, your position is inherently unreasonable.